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blk-integrity: remove seed for user mapped buffers

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The seed is only used for kernel generation and verification. That
doesn't happen for user buffers, so passing the seed around doesn't
accomplish anything.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anuj Gupta <anuj20.g@samsung.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Link: https://lore.kernel.org/r/20241016201309.1090320-1-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch 2024-10-16 13:13:09 -07:00 committed by Jens Axboe
parent 826cc42adf
commit 133008e84b
5 changed files with 19 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
block/bio-integrity.c
View File

@ -199,7 +199,7 @@ EXPORT_SYMBOL(bio_integrity_add_page);
static int bio_integrity_copy_user(struct bio *bio, struct bio_vec *bvec, static int bio_integrity_copy_user(struct bio *bio, struct bio_vec *bvec,
int nr_vecs, unsigned int len, int nr_vecs, unsigned int len,
unsigned int direction, u32 seed) unsigned int direction)
{ {
bool write = direction == ITER_SOURCE; bool write = direction == ITER_SOURCE;
struct bio_integrity_payload *bip; struct bio_integrity_payload *bip;
@ -247,7 +247,6 @@ static int bio_integrity_copy_user(struct bio *bio, struct bio_vec *bvec,
} }
bip->bip_flags |= BIP_COPY_USER; bip->bip_flags |= BIP_COPY_USER;
bip->bip_iter.bi_sector = seed;
bip->bip_vcnt = nr_vecs; bip->bip_vcnt = nr_vecs;
return 0; return 0;
free_bip: free_bip:
@ -258,7 +257,7 @@ static int bio_integrity_copy_user(struct bio *bio, struct bio_vec *bvec,
} }
static int bio_integrity_init_user(struct bio *bio, struct bio_vec *bvec, static int bio_integrity_init_user(struct bio *bio, struct bio_vec *bvec,
int nr_vecs, unsigned int len, u32 seed) int nr_vecs, unsigned int len)
{ {
struct bio_integrity_payload *bip; struct bio_integrity_payload *bip;
@ -267,7 +266,6 @@ static int bio_integrity_init_user(struct bio *bio, struct bio_vec *bvec,
return PTR_ERR(bip); return PTR_ERR(bip);
memcpy(bip->bip_vec, bvec, nr_vecs * sizeof(*bvec)); memcpy(bip->bip_vec, bvec, nr_vecs * sizeof(*bvec));
bip->bip_iter.bi_sector = seed;
bip->bip_iter.bi_size = len; bip->bip_iter.bi_size = len;
bip->bip_vcnt = nr_vecs; bip->bip_vcnt = nr_vecs;
return 0; return 0;
@ -303,8 +301,7 @@ static unsigned int bvec_from_pages(struct bio_vec *bvec, struct page **pages,
return nr_bvecs; return nr_bvecs;
} }
int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t bytes, int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t bytes)
u32 seed)
{ {
struct request_queue *q = bdev_get_queue(bio->bi_bdev); struct request_queue *q = bdev_get_queue(bio->bi_bdev);
unsigned int align = blk_lim_dma_alignment_and_pad(&q->limits); unsigned int align = blk_lim_dma_alignment_and_pad(&q->limits);
@ -350,9 +347,9 @@ int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t bytes,
if (copy) if (copy)
ret = bio_integrity_copy_user(bio, bvec, nr_bvecs, bytes, ret = bio_integrity_copy_user(bio, bvec, nr_bvecs, bytes,
direction, seed); direction);
else else
ret = bio_integrity_init_user(bio, bvec, nr_bvecs, bytes, seed); ret = bio_integrity_init_user(bio, bvec, nr_bvecs, bytes);
if (ret) if (ret)
goto release_pages; goto release_pages;
if (bvec != stack_vec) if (bvec != stack_vec)

4
block/blk-integrity.c
View File

@ -113,9 +113,9 @@ int blk_rq_map_integrity_sg(struct request *rq, struct scatterlist *sglist)
EXPORT_SYMBOL(blk_rq_map_integrity_sg); EXPORT_SYMBOL(blk_rq_map_integrity_sg);
int blk_rq_integrity_map_user(struct request *rq, void __user *ubuf, int blk_rq_integrity_map_user(struct request *rq, void __user *ubuf,
ssize_t bytes, u32 seed) ssize_t bytes)
{ {
int ret = bio_integrity_map_user(rq->bio, ubuf, bytes, seed); int ret = bio_integrity_map_user(rq->bio, ubuf, bytes);
if (ret) if (ret)
return ret; return ret;

17
drivers/nvme/host/ioctl.c
View File

@ -114,7 +114,7 @@ static struct request *nvme_alloc_user_request(struct request_queue *q,
static int nvme_map_user_request(struct request *req, u64 ubuffer, static int nvme_map_user_request(struct request *req, u64 ubuffer,
unsigned bufflen, void __user *meta_buffer, unsigned meta_len, unsigned bufflen, void __user *meta_buffer, unsigned meta_len,
u32 meta_seed, struct io_uring_cmd *ioucmd, unsigned int flags) struct io_uring_cmd *ioucmd, unsigned int flags)
{ {
struct request_queue *q = req->q; struct request_queue *q = req->q;
struct nvme_ns *ns = q->queuedata; struct nvme_ns *ns = q->queuedata;
@ -152,8 +152,7 @@ static int nvme_map_user_request(struct request *req, u64 ubuffer,
bio_set_dev(bio, bdev); bio_set_dev(bio, bdev);
if (has_metadata) { if (has_metadata) {
ret = blk_rq_integrity_map_user(req, meta_buffer, meta_len, ret = blk_rq_integrity_map_user(req, meta_buffer, meta_len);
meta_seed);
if (ret) if (ret)
goto out_unmap; goto out_unmap;
} }
@ -170,7 +169,7 @@ static int nvme_map_user_request(struct request *req, u64 ubuffer,
static int nvme_submit_user_cmd(struct request_queue *q, static int nvme_submit_user_cmd(struct request_queue *q,
struct nvme_command *cmd, u64 ubuffer, unsigned bufflen, struct nvme_command *cmd, u64 ubuffer, unsigned bufflen,
void __user *meta_buffer, unsigned meta_len, u32 meta_seed, void __user *meta_buffer, unsigned meta_len,
u64 *result, unsigned timeout, unsigned int flags) u64 *result, unsigned timeout, unsigned int flags)
{ {
struct nvme_ns *ns = q->queuedata; struct nvme_ns *ns = q->queuedata;
@ -187,7 +186,7 @@ static int nvme_submit_user_cmd(struct request_queue *q,
req->timeout = timeout; req->timeout = timeout;
if (ubuffer && bufflen) { if (ubuffer && bufflen) {
ret = nvme_map_user_request(req, ubuffer, bufflen, meta_buffer, ret = nvme_map_user_request(req, ubuffer, bufflen, meta_buffer,
meta_len, meta_seed, NULL, flags); meta_len, NULL, flags);
if (ret) if (ret)
return ret; return ret;
} }
@ -268,7 +267,7 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
c.rw.lbatm = cpu_to_le16(io.appmask); c.rw.lbatm = cpu_to_le16(io.appmask);
return nvme_submit_user_cmd(ns->queue, &c, io.addr, length, metadata, return nvme_submit_user_cmd(ns->queue, &c, io.addr, length, metadata,
meta_len, lower_32_bits(io.slba), NULL, 0, 0); meta_len, NULL, 0, 0);
} }
static bool nvme_validate_passthru_nsid(struct nvme_ctrl *ctrl, static bool nvme_validate_passthru_nsid(struct nvme_ctrl *ctrl,
@ -323,7 +322,7 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c, status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c,
cmd.addr, cmd.data_len, nvme_to_user_ptr(cmd.metadata), cmd.addr, cmd.data_len, nvme_to_user_ptr(cmd.metadata),
cmd.metadata_len, 0, &result, timeout, 0); cmd.metadata_len, &result, timeout, 0);
if (status >= 0) { if (status >= 0) {
if (put_user(result, &ucmd->result)) if (put_user(result, &ucmd->result))
@ -370,7 +369,7 @@ static int nvme_user_cmd64(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c, status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c,
cmd.addr, cmd.data_len, nvme_to_user_ptr(cmd.metadata), cmd.addr, cmd.data_len, nvme_to_user_ptr(cmd.metadata),
cmd.metadata_len, 0, &cmd.result, timeout, flags); cmd.metadata_len, &cmd.result, timeout, flags);
if (status >= 0) { if (status >= 0) {
if (put_user(cmd.result, &ucmd->result)) if (put_user(cmd.result, &ucmd->result))
@ -504,7 +503,7 @@ static int nvme_uring_cmd_io(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
if (d.addr && d.data_len) { if (d.addr && d.data_len) {
ret = nvme_map_user_request(req, d.addr, ret = nvme_map_user_request(req, d.addr,
d.data_len, nvme_to_user_ptr(d.metadata), d.data_len, nvme_to_user_ptr(d.metadata),
d.metadata_len, 0, ioucmd, vec); d.metadata_len, ioucmd, vec);
if (ret) if (ret)
return ret; return ret;
} }

4
include/linux/bio-integrity.h
View File

@ -72,7 +72,7 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio, gfp_t gfp,
unsigned int nr); unsigned int nr);
int bio_integrity_add_page(struct bio *bio, struct page *page, unsigned int len, int bio_integrity_add_page(struct bio *bio, struct page *page, unsigned int len,
unsigned int offset); unsigned int offset);
int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t len, u32 seed); int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t len);
void bio_integrity_unmap_user(struct bio *bio); void bio_integrity_unmap_user(struct bio *bio);
bool bio_integrity_prep(struct bio *bio); bool bio_integrity_prep(struct bio *bio);
void bio_integrity_advance(struct bio *bio, unsigned int bytes_done); void bio_integrity_advance(struct bio *bio, unsigned int bytes_done);
@ -99,7 +99,7 @@ static inline void bioset_integrity_free(struct bio_set *bs)
} }
static inline int bio_integrity_map_user(struct bio *bio, void __user *ubuf, static inline int bio_integrity_map_user(struct bio *bio, void __user *ubuf,
ssize_t len, u32 seed) ssize_t len)
{ {
return -EINVAL; return -EINVAL;
} }

5
include/linux/blk-integrity.h
View File

@ -28,7 +28,7 @@ static inline bool queue_limits_stack_integrity_bdev(struct queue_limits *t,
int blk_rq_map_integrity_sg(struct request *, struct scatterlist *); int blk_rq_map_integrity_sg(struct request *, struct scatterlist *);
int blk_rq_count_integrity_sg(struct request_queue *, struct bio *); int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
int blk_rq_integrity_map_user(struct request *rq, void __user *ubuf, int blk_rq_integrity_map_user(struct request *rq, void __user *ubuf,
ssize_t bytes, u32 seed); ssize_t bytes);
static inline bool static inline bool
blk_integrity_queue_supports_integrity(struct request_queue *q) blk_integrity_queue_supports_integrity(struct request_queue *q)
@ -104,8 +104,7 @@ static inline int blk_rq_map_integrity_sg(struct request *q,
} }
static inline int blk_rq_integrity_map_user(struct request *rq, static inline int blk_rq_integrity_map_user(struct request *rq,
void __user *ubuf, void __user *ubuf,
ssize_t bytes, ssize_t bytes)
u32 seed)
{ {
return -EINVAL; return -EINVAL;
} }